OpenRA/OpenRA

Health v2 · maintenance only

Adoption not part of the score

17288 stars · 3022 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

OpenRA is a free, open-source real-time strategy game engine written in C# using SDL and OpenGL that recreates and modernizes classic Westwood games like Command & Conquer: Red Alert, Tiberian Dawn, and Dune 2000. It ships with official mods, integrated online multiplayer, a Lua scripting API for missions, and a Mod SDK for building custom RTS games.

Use cases

• play classic command and conquer red alert on modern systems
• play dune 2000 online multiplayer for free
• build my own RTS game with an open source engine
• create custom maps and scripted missions for an RTS game
• host a dedicated server for classic RTS multiplayer
• remake a classic 2D real-time strategy game
• mod command and conquer with modern gameplay features

When to choose

• you want to play or modernize classic Westwood RTS games without emulation
• you want a proven open-source engine with multiplayer, replays, and modding support for 2D/2.5D RTS games
• you want to create a total conversion or new RTS using the Mod SDK and Lua API

When to avoid

• you need a general-purpose 3D game engine for non-RTS genres
• you want pixel-perfect fidelity to the original games rather than rebalanced, modernized gameplay
• you need a commercial engine with marketplace assets and vendor support

Facets

framework · maturity active

game-engine graphics gui gaming-tools cross-platform windows cross-platform cpp dotnet rts real-time-strategy command-and-conquer red-alert dune-2000 modding lua-scripting sdl opengl multiplayer open-source-game game-development linux macos

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For agents

markdown · JSON · MCP: product_card(name="OpenRA/OpenRA")